CUET Questions — Chemistry

Q3. Molecules in solids are held together by dipole - dipole interactions. Identify the polar molecules from the following. A. Solid SO2 B. NH3 C. Cl2 D. HCI E. He Choose the correct answer from the o

Q8. The rate law for a reaction between substance P & Q is given by Rate = k[P]ˣ[Q]ʸ If concentration of P is doubled and concentration of Q is halved, the ratio of the new rate to the earlier rate of

Q17. Which of the following compound will not undergo Azo coupling reaction?

Q19. In which of the following actinoid elements 6d subshell is vacant? (a) Pa, Protactinium (b) Np, Neptunium (c) Lr, Lawrencium (d) Pu, Plutonium

Q3. Match List-I with List-II: List-I (A) Diamagnetic solid (B) Ferromagnetic solid (C) Antiferomagnetic solid (D) Ferrimagnetic solid List-II (I) CrO2 (II) Fe3O4 (III) NaCl (IV) MnO Choose the correc

Q28. In a thermite process, the reducing agent is (a) C (b) Zn (c) Na (d) Al

Q9. Zeolite can be used to soften hard water when: (a) Ca2+ or Mg2+ ion in zeolite are replaced by Na+ ions in hard water (b) Ca2+ ions in zeolite are replaced by Mg2+ ions in hard water (c) Na+ ions

Q50. Choose the correct answer from the options given below: (A) Toluene to Benzaldehyde (Etard reaction) (B) RCOCl to RCHO (Rosenmund reduction) (C) Ketone to Alkane (Clemmensen reduction) (D) Ketone

Q44. What is not true regarding compound [B]? (A) They are higher boiling liquids than aldehydes and ketones due to extensive H Bonding (B) They are soluble in Benzene (C) They produce alkane when hea

Q12. Which of the following is a molecular solid?

Q22. In the extraction of metallic Zn from calamine ore (ZnCO₃) following steps are involved: (A) Distillation of impure Zn (B) Calcination of the ore (C) Hydraulic washing of ore (D) Reduction of ZnO

Q18. Identify incorrect statement about H2 - O2 fuel cell from the following: (a) At cathode O2 is reduced to OH- (b) At anode H₂ is oxidized to form water (c) The cell runs continuously even if react

Q8. An analysis of iron oxide shows that its formula is Fe1.903. What percentages of iron exists as Fe3+ and Fe4+ ions: (a) Fe3+ = 82.98% and Fe++ = 17.02% (b) Fe3+ = 84.21% and Fe4+ = 15.79% (c) Fe3+

Q30. The isotope 19K42 has a half life of about 12 hours. What fraction of the initial concentration of 19K42 remains after 48 hours. (a) 1/4 (b) 1/8 (c) 1/12 (d) 1/16

Q45. The product (X) is: R-CH=CH-CHO + NH2-C-NH-NH2 → X (image of reaction: alpha,beta-unsaturated aldehyde + semicarbazide -> product X) (a) R-CH=CH-CH=CH-NH-NH2 (b) R-CH=CH-CH=N-C-NH-NH2 (c) R-CH2-C

Q37. The formation of micelle takes place only: (A) above a particular temperature called kraft temperature (B) above a particular concentration called critical micelle concentration (C) when catalyst

Q6. When dilute aqueous solution of KI (excess) is added to AgNO3 solution, the charge on the AgI colloidal, particles formed will be:

Q45. In hydrogen fuel cell, the reactants are bubbled through which electrodes?

Q50. Fehling Solution A and B respectively, are: (a) Alkaline solution of sodium potassium tartrate and alcoholic copper sulphate (b) Aqueous copper sulphate and alkaline solution off Rochelle salt (c

Q35. Which of the following pairs of transition metal ions is the strongest oxidizing agent?